Improvement in the manufacture of tin cans



.UNITED STATES PATENT OFFICE.,

GEORGE VV. PRINCE, OF CAMBRIDGE, ASSIGNOR TO BANKER dr OARPENTER,

OF BOSTON, MASSAOHUSETTS.

-IMPROVEMENT IN THE MANUFACTURE OF TIN CANS.

Spccification forming part of Letters Patent No. 43,371, dnted June 28, 1864..

To aZZ whom it` may cancern:

Be it known that I, GEORGE W. PRINon, of Cambridge, in the county of Middlesex and State of Massachusetts, have invented certain lmprovements in the Manufacture of Tin Gans, of Which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in Which- Figure l is a perspective view of my improved can; Fig. 2, a transverse section through the same on the line x w of Fg. l; Fig. 3, a vertical section through the same 011 the line 3/ y of Fig. l; Fig. 4, avieW of one of the end plates.

In fiat-sided tin cans, more particularly those used for containing oils, paints, &c., a great difficulty has been experienced on account of their liability to leak at the joints, especially ifroughly handled, Which often occasioned considerable loss.

My invention has for its object to remedy this inconvenience; and it consists in uniting the top, bottom, and sides of such a can by means of single flanges, and double or guttered flanges, so combined together as to form acan of great strength and durability, Which is not liable to leak When subjected to rough usage, and possesses a neat and finished appearance.

To enable others skilled in the art to understand and use myinvention, I Will proceed to describe the manner in Which I have carried .it out.

tom pieces,,B, (one of Which is shown in Fig.v 4,) have their edges turned over, forming a single fiange, and at each corner is cut a square notch, e, to accommodate the projection or rib formed by the flanges of the side pieces, A, When puttogether. When the side pieces, A, are put together the flanges b fit into the grooves a, after Which the top and bottom pieces, B, are inserted in place, the flanges (l entering the groove c, each seam or joint leaving a small groove, 5, on the exterior surface of the can, into Which solder is run With an ordinary soldering-iron, Which fills the groove 5 With solder, thus making a tight and solid joint, Which is not liable to leakage, and the projection or rib on the interior of the seam also adds niaterially to the strength of the can.

By the use of my improvements a can may be put together and soldered in much less time than by the ordinary method, and the saving It is evident that my improvements are equallyapplicable to a fiat-sided can of a different cross-section having three or more sides.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

Uniting the top, bottom, and sides of a tin can by means of double or guttered flanges on one piece and single flanges on the adjacent pieces through the intervention of solder applied thereto, When the lock or joint is turned and formed on the inside of the can, Which gives strength to the can and protection to the lock or joint, substantially in the manner and for the purpose described.

GEO'. XV. ERINCE,

\Vitnesscs 1). E. Tnsonmrnorrnn, N. W. SrEAnNs. 

